The 803601655 Flashing Relay is a genuine OEM electronic flasher unit manufactured by XCMG for motor graders and heavy construction equipment. This relay controls the flashing frequency of turn signals and hazard warning lights, ensuring compliance with road safety regulations.
Designed to withstand extreme vibration, voltage fluctuations, and temperature extremes, the 803601655 flasher relay features a sealed, solid-state design with no moving contacts. It directly replaces failed or erratic flasher units on XCMG GR series graders and compatible machinery.
Each unit operates at 24V DC and provides a consistent flash rate of 85±15 flashes per minute, even with LED or incandescent lamp loads. The built-in overload and short-circuit protection prevents damage to the vehicle’s lighting system.
| Parameter | Specification |
|---|---|
| OEM Number | 803601655 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Electronic Flashing Relay (Turn Signal / Hazard) |
| Nominal Voltage | 24V DC (operating range 18V – 32V) |
| Flash Rate | 85 ± 15 flashes per minute |
| Load Compatibility | LED (5W – 150W) and incandescent (10W – 150W) |
| Maximum Switching Current | 15A per channel |
| Number of Channels | 2 (left and right turn signals) + hazard override |
| Connector Type | 3-pin flat plug (standard ISO 7588) |
| Terminal Functions | Pin 49: +24V input, Pin 49a: output to lamps, Pin 31: ground |
| Overload Protection | Automatic shutdown at >18A, self-resetting |
| Short Circuit Protection | Yes, with auto-retry after 2 seconds |
| Operating Temperature | -40°C to +85°C |
| Ingress Protection | IP67 (sealed against dust and temporary immersion) |
| Housing Material | PA66 nylon with UV stabilizer, UL94 V-0 |
| Dimensions (L×W×H) | 32 mm × 28 mm × 25 mm |
| Mounting | Plug-in socket (bracket not included) |
| Electrical Life | > 1,000,000 flash cycles |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Certifications | ECE R10 (EMC), RoHS, ISO 9001:2015 |
The XCMG 803601655 Flashing Relay uses advanced solid-state circuitry instead of traditional bimetal or thermal flashers. This eliminates the “clicking” sound and provides a constant flash rate regardless of lamp load or temperature. The relay automatically adjusts its flash rate to compensate for burned-out lamps (some versions double flash to indicate bulb failure), but the XCMG unit maintains standard rate while providing diagnostic output.
Unlike mechanical flashers that wear out after thousands of cycles, the 803601655 is rated for over one million flashes. It is immune to vibration, which is critical for motor graders that operate on rough terrain. The sealed housing prevents moisture ingress, a common cause of failure in open-style flashers.
The relay also features reverse polarity protection and transient voltage suppression (load dump up to 100V for 200ms). This protects the internal MOSFETs from voltage spikes caused by alternator load dump or jump-starting errors.
The 803601655 flasher relay is a direct plug-in replacement for the original equipment on XCMG GR series motor graders. It fits the standard 3-pin flasher socket (ISO 7588 type) located in the cab fuse box or behind the dashboard. The relay is keyed to prevent incorrect installation.
Installation: locate the old flasher relay, pull it out (may require a gentle wiggle), and push the new 803601655 into the same socket until it clicks. No tools or wiring modification are required. Test the turn signals and hazard lights to verify proper operation.
Common failure symptoms: turn signals do not flash (stay on solid), flash too fast or too slow, intermittent flashing, or no operation at all. Replacing with the genuine XCMG part restores correct flash rate and reliability.
XCMG tests every batch of 803601655 relays to rigorous standards. Each unit undergoes 500 hours of salt spray (ASTM B117), 100 thermal shock cycles from -40°C to +85°C, and 20g vibration for 24 hours across 10-2000Hz. The relay is also subjected to load dump pulses per ISO 7637-2 and reverse battery connection tests.
The housing is made of UV-stabilized PA66 nylon, which resists cracking from sunlight exposure. The potting compound used to seal the electronics is flexible down to -40°C, preventing stress fractures in cold climates. All external terminals are tin-plated brass for corrosion resistance.
The IP67 rating means the relay can be pressure-washed without damage. This is essential for graders that operate in muddy or dusty environments where regular cleaning is required.
Aftermarket flasher relays often use inferior components: undersized MOSFETs, poor thermal management, and low-grade plastics. The genuine XCMG relay is designed for 24V heavy equipment, not automotive 12V systems. Many generic flashers fail prematurely when used with LED lamps due to insufficient minimum load detection.
The 803601655 is compatible with both LED and incandescent lamps without requiring external load resistors. Its built-in current sensing ensures correct flash rate across a wide range of lamp configurations. Counterfeit units may cause hyper-flash or non-flash conditions.
XCMG provides a 12-month unlimited-hour warranty against defects. Each relay is laser-etched with the XCMG logo and part number. This supersedes older numbers 803601501, 803601588, and 803601612.
If turn signals are not flashing, first check the fuse and lamp bulbs. Then test the flasher relay by swapping it with a known good unit. Using a multimeter, you can verify that pin 49 receives battery voltage with ignition on. Ground pin 31 should have continuity to chassis ground. When the turn signal switch is activated, pin 49a should pulse voltage at the flash rate.
If the 803601655 relay clicks rapidly or continuously, check for a short circuit in the lamp wiring. The relay’s overload protection will cycle on/off rapidly if the load exceeds 18A. Replace any damaged wiring or bulbs before installing a new relay.
For fleet maintenance, keep spare 803601655 relays on hand. They are a common failure point on high-hour machines, and replacing a faulty flasher restores safety and legal compliance in minutes.
The 803601655 Flashing Relay is stocked in XCMG’s regional warehouses in North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 3-7 business days worldwide. Expedited shipping (1-2 days) is available for urgent repairs.
Bulk orders (10+ pieces) receive volume discounts and can be shipped via sea freight. Each relay is individually bagged with desiccant and anti-static protection. For large fleets, consignment stock programs ensure immediate availability.
Don’t let a failed flasher relay compromise safety or legal compliance. Order the genuine XCMG 803601655 Flashing Relay today and ensure your motor grader’s turn signals and hazard lights operate reliably in all conditions.
The 803601655 Flashing Relay is a critical safety component that ensures other road users and site personnel can see your machine’s intentions. A properly functioning turn signal and hazard system reduces accident risk and complies with OSHA and local traffic regulations. Trust XCMG genuine parts for peace of mind.
Upgrade or replace your worn flasher relay today. The XCMG 803601655 offers solid-state reliability, wide load compatibility, and extreme environmental resistance – everything you expect from original equipment. Order now and keep your grader safe and productive.
